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Porsche 911 The Porsche 911 (and all it's trimlines) is a famous, distinctive and durable car has undergone continuous development since its arrival in 1964. The 911 was developed as a more powerful, larger, more comfortable replacement for the Porsche 356.

is 94 octane better for the car than 91?

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Old Oct 11, 2008 | 10:52 PM
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carsnob's Avatar
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Default is 94 octane better for the car than 91?
I have been using Sunoco 94 octane in my '06 C4S figuring that it's better for the engine and for performance. Is it a waste of $$ and would 91 octane essentially make the same difference? I've heard varying opinions and am now totally confused!
 
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Old Oct 13, 2008 | 09:51 AM
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PorscheDoc's Avatar
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Default RE: is 94 octane better for the car than 91?
Is it better for the car, probably, but you aren't going to notice any difference in performance without remapping the ECU.
 
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